September 2017

Identify & Analyze Web Site Tech Stacks With rappalyzer

September 30, 2017 | hrbrmstr

Modern websites are complex beasts. They house photo galleries, interactive visualizations, web fonts, analytics code and other diverse types of content. Despite the potential for diversity, many web sites share similar “tech stacks” — the components that come together to make them what they are. These stacks consist of web servers (...
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Data.Table by Example – Part 3

September 30, 2017 | atmathew

For this final post, I will cover some advanced topics and discuss how to use data tables within user generated functions. Once again, let’s use the Chicago crime data. Let’s start by subseting the data. The following code takes the first 50000 rows within the dat dataset, selects four ...
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tidytext 0.1.4

September 29, 2017 | Rstats on Julia Silge

I am pleased to announce that tidytext 0.1.4 is now on CRAN! This release of our package for text mining using tidy data principles has an excellent collection of delightfulness in it. First off, all the important functions in tidytext now support supp...
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Going, going, … 2

September 29, 2017 | jameshunterbr

Em vários posts este mês, destaquei um novo versão do curso de estatística que oferecemos em São Paulo sobre estatística. É um curso inicial que usa R como a ferramenta chave para ensinar a montagem de análises quantitativas importantes nas … Continue reading → [Read more...]

bupaR: Business Process Analysis with R

September 29, 2017 | Gert Janssenswillen

Organizations are nowadays storing huge amounts of data related to various business processes. Process mining provides different methods and techniques to analyze and improve these processes. This allows companies to gain a competitive advantage. Process mining initiated with the discovery … Continue reading → [Read more...]

Multicollinearity in R

September 29, 2017 | Bidyut Ghosh

One of the assumptions of Classical Linear Regression Model is that there is no exact collinearity between the explanatory variables. If the explanatory variables are perfectly correlated, you will face with these problems: Parameters of the model become indeterminate Standard errors of the estimates become infinitely large However, the case ...
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New Package GetITRData

September 29, 2017 | R and Finance

Downloading Quarterly Financial Reports from Bovespa - Financial statements of companies traded at B3 (formerly Bovespa), the Brazilian stock exchange, are available in its website. Accessing the data for a single company is strai... [Read more...]

August 2017 New Package Picks

September 28, 2017 | R Views

August was a relatively slow month for new R packages; “only” 180 new packages stuck to CRAN. Here are my “Top 40” picks organized into seven categories: Data, Machine Learning, Miscellaneous, Science, Statistics, Utilities and Visualizations. Although they have been written for specialized audiences, I have included the three “Science” packages because, ...
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